Better Format Git Pull Fast-Forward Details

[ianhi]

Is your feature request related to a problem? Please describe.

When you pull and click on the details of the toast notification that pops up on success the output is not well formatted:

Describe the solution you'd like

The formatting looks nice like what git puts into the terminal. I think this is a twofold step:

1. Preserve the newlines
2. add color

Additional Context

This is similar to #670